Chair seat and back



FIG. 1 is a perspective view, taken slightly from above, of a chair seat and back showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a right side elevational view, the left side elevational view being a mirror image thereof;

FIG. 4 is a top plan view;

FIG. 5 is a rear elevational view;

FIG. 6 is a bottom plan view;

FIG. 7 is a perspective view, taken slightly from above, of a second embodiment of a chair seat and back showing my new design;

FIG. 8 is a front elevational view;

FIG. 9 is a right side elevational view, the left side elevational view being a mirror image thereof;

FIG. 10 is a top plan view;

FIG. 11 is a rear elevational view;

FIG. 12 is a bottom plan view;

FIG. 13 is a perspective view, taken slightly from above, of a third embodiment of a chair seat and back showing my new design;

FIG. 14 is a front elevational view;

FIG. 15 is a right side elevational view, the left side elevational view being a mirror image thereof;

FIG. 16 is a top plan view;

FIG. 17 is a rear elevational view;

FIG. 18 is a bottom plan view;

FIG. 19 is a perspective view, taken slightly from above, of a fourth embodiment of a chair seat and back showing my new design;

FIG. 20 is a front elevational view;

FIG. 21 is a right side elevational view, the left side elevational view being a mirror image thereof;

FIG. 22 is a top plan view;

FIG. 23 is a rear elevational view; and,

FIG. 24 is a bottom plan view thereof. 

The ornamental design for a chair seat and back, as shown and described. 